diff --git a/tests/title.test b/tests/title.test
index 21d2139..9deced5 100644
--- a/tests/title.test
+++ b/tests/title.test
@@ -304,6 +304,7 @@ class TitleTranslationTestCase extends DrupalWebTestCase {
       'changed' => REQUEST_TIME,
     );
     entity_translation_get_handler('taxonomy_term', $term)->setTranslation($translation);
+    entity_translation_get_handler('taxonomy_term', $term)->setFormLanguage($translation_langcode);
     taxonomy_term_save($term);
     $this->assertTrue($this->checkLegacyValues($term, $original_values), 'Legacy field values correctly stored.');
     $term = $this->termLoad($term->tid, $translation_langcode);
@@ -312,6 +313,7 @@ class TitleTranslationTestCase extends DrupalWebTestCase {
 
     // Delete the translation.
     entity_translation_get_handler('taxonomy_term', $term)->removeTranslation($translation_langcode);
+    entity_translation_get_handler('taxonomy_term', $term)->setFormLanguage($translation_langcode);
     taxonomy_term_save($term);
     $this->assertTrue($this->checkLegacyValues($term, $original_values), 'Legacy field values correctly stored.');
     $term = $this->termLoad($term->tid, $langcode);
@@ -319,6 +321,7 @@ class TitleTranslationTestCase extends DrupalWebTestCase {
 
     // Make the term language neutral.
     entity_translation_get_handler('taxonomy_term', $term)->setOriginalLanguage(LANGUAGE_NONE);
+    entity_translation_get_handler('taxonomy_term', $term)->setFormLanguage(LANGUAGE_NONE);
     foreach ($original_values as $name => $value) {
       $field_name = $name . '_field';
       $term->{$field_name}[LANGUAGE_NONE] = $term->{$field_name}[$langcode];
@@ -330,6 +333,7 @@ class TitleTranslationTestCase extends DrupalWebTestCase {
     $this->assertTrue($this->checkFieldValues($term, $original_values, LANGUAGE_NONE), 'Term original language correctly changed to the former translation language.');
 
     // Change the term language to the former translation language.
+    entity_translation_get_handler('taxonomy_term', $term)->setFormLanguage($translation_langcode);
     entity_translation_get_handler('taxonomy_term', $term)->setOriginalLanguage($translation_langcode);
     foreach ($original_values as $name => $value) {
       $field_name = $name . '_field';
@@ -402,6 +406,23 @@ class TitleTranslationTestCase extends DrupalWebTestCase {
     // Check that legacy fields have the correct values.
     $this->assertEqual($term->name, $original_values['name'], t('Taxonomy term name correctly stored.'));
     $this->assertEqual($term->description, $original_values['description'], t('Taxonomy term description correctly stored.'));
+
+    // Use the original language code as path prefix instead the translation
+    // language and check if the interface language doesn't affect the
+    // translations.
+    $translated_values = array(
+      'name' => $this->randomName(),
+      'description' => $this->randomName(),
+    );
+    $edit = $this->editValues($translated_values, $translation_langcode);
+    $this->drupalPost($langcode . '/taxonomy/term/' . $term->tid . '/edit/' . $translation_langcode, $edit, t('Save'));
+    $term = $this->termLoad($term->tid);
+    $this->assertTrue($this->checkFieldValues($term, $translated_values, $translation_langcode, FALSE), t('Taxonomy term translation updated.'));
+    $this->assertTrue($this->checkFieldValues($term, $original_values, $langcode), t('Taxonomy term original values preserved.'));
+
+    // Check that legacy fields have the correct values.
+    $this->assertEqual($term->name, $original_values['name'], t('Taxonomy term name correctly stored.'));
+    $this->assertEqual($term->description, $original_values['description'], t('Taxonomy term description correctly stored.'));
   }
 
   /**
diff --git a/title.module b/title.module
index 560acd1..4937389 100644
--- a/title.module
+++ b/title.module
@@ -150,8 +150,9 @@ function title_entity_presave($entity, $entity_type) {
   // need to synchronize the legacy field values into the replacing field
   // translations in the active language.
   if (module_invoke('entity_translation', 'enabled', $entity_type)) {
-    $langcode = title_active_language();
-    $translations = entity_translation_get_handler($entity_type, $entity)->getTranslations();
+    $translation_handler = entity_translation_get_handler($entity_type, $entity);
+    $translations = $translation_handler->getTranslations();
+    $langcode = $translation_handler->getFormLanguage();
     // If we are removing a translation for the active language we need to skip
     // reverse synchronization, as we would store empty values in the original
     // replacing fields immediately afterwards.